收藏本站
SAW Components
B3932
SAW filter
434.17 MHz
Data sheet
ESD protection of SAW filters
SAW filters are E lectro S tatic D ischarge sensitive devices. To reduce the probability of damages
caused by ESD, special matching topologies have to be applied.
In general, “ESD matching” has to be ensured at that filter port, where electrostatic discharge is
expected.
Electrostatic discharges predominantly appear at the antenna input of RF receivers. Therefore
only the input matching of the SAW filter has to be designed to short circuit or to block the ESD
pulse.
Below two figures show recommended “ESD matching” topologies.
Depending on the input impedance of the SAW filter and the source impedance, the needed
component values have to be determined from case to case.
Ls3
Ls3
Lp2
to output
matching
Dp1
Lp2
to output
matching
Fig. 1 MLC varistor plus ESD matching
Fig. 2 Suppressor diode plus ESD matching
In cases where minor ESD occur, following simplified “ESD matching” topologies can be used
alternatively.
Ls2
Cs1
Lp1
to output
matching
Lp2
to output
matching
Fig. 3 shunt L – series L matching
Fig. 4 series C – shunt L matching
Effectiveness of the applied ESD protection has to be checked according to relevant industry
standards or customer specific requirements.
For further information, please refer to EPCOS Application report:
“ ESD protection for SAW filters ”. This report can be found under www.epcos.com/rke . Click on
“data sheets” and then “Applications” under category “Further information”.
Please read cautions and warnings and
important notes at the end of this document.
6
November 06, 2013
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
B39431B3933H110 FILTER SAW 433.92MHZ SMD
B39431B3960B210 FILTER SAW 433.92MHZ SMD
B39431R770U310 RESONATR SAW 433.81/434.06MHZ
B39431R820H210 RESONATOR SAW CER 433.92MHZ SMD
B39431R880H210 RESONATOR SAW CER 433.92MHZ SMD
B39431R920H110 RESONATOR SAW CER 433.92MHZ SMD
B39431R962H110 RESONATOR SAW CER 433.95MHZ SMD
B39431R964H110 R 964 434.15 RESONATOR
相关代理商/技术参数
B39431B3933H110 功能描述:谐振器 RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel
B39431B3960B210 功能描述:信号调节 433.92MHz 50ohms B3960 2.9dB 6V RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431-B4039-Z610 制造商:EPCOS 制造商全称:EPCOS 功能描述:SAW Components Low Loss Filter for Mobile Communication 433,91 MHz
B39431B5055Z810 功能描述:信号调节 RF LOW LOSS 425MHZ RoHS:否 制造商:EPCOS 产品:Duplexers 频率:782 MHz, 751 MHz 频率范围: 电压额定值: 带宽: 阻抗:50 Ohms 端接类型:SMD/SMT 封装 / 箱体:2.5 mm x 2 mm 工作温度范围:- 30 C to + 85 C 封装:Reel
B39431R 820H210 制造商:TDK-EPC 功能描述:R 820 RESONATOR - Tape and Reel
B39431R 856H210 制造商:TDK-EPC 功能描述:R 856 RESONATOR - Tape and Reel
B39431R 860H210 制造商:TDK-EPC 功能描述:R 858 RESONATOR - Tape and Reel
B39431R 880H210 制造商:TDK-EPC 功能描述:R 880 RESONATOR - Tape and Reel